The anchor tweeted that security staff had said "shots fired, run!" after arriving at the airport.

Los Angeles International Airport was evacuated on Sunday night after a suspected active shooter situation in Terminal 4, according to multiple reports.

NBC's Nightly News anchor Lester Holt was caught up in the ensuing chaos, tweeting as he arrived off a flight at the airport that people were pouring out of Terminal 4, the American Airlines terminal, and onto the tarmac and that airport security were saying "shots fired, run!" Holt continued to report from the airport with video posts to his personal Facebook page.

Actor Josh Gad also was at the airport and tweeted that police bearing rifles had stormed the terminal building and told everyone to get out.

According to reports, LAX airport police closed the terminal to all incoming traffic, and no flights were being allowed to land at the airport while the incident was being investigated.

CBS News reported that at 9:40 p.m. PT police had officially ruled out a shooter or any other incident. Andy Neiman, commanding media relations officer for the LAPD, tweeted that "report of shooting at LAX proven to be loud noises only" and further that "no shots fired no injuries investigation continues to locate source."

The chaos and hysteria at LAX mirror a similar incident at New York's JFK airport last Sunday when Terminal 8 was evacuated after people had reported shots being fired, although police subsequently found nothing suspicious.

Arriving at LAX off flight when people started pouring out of term 4 onto Tarmac. Security said "shots fired. Run!" Now in vehicle on taxiwy